Photoprinting machine



June 12, 1 934. H c, JONES 1,962,741

PHOTOPRINTING MACHINE Original Filed Feb. 26, 1927 amen wax $5 1M.) (lama/1;

Patented June 12, 1934 UNITED STATES PATENT OFFICE Original applicationFebruary 26, 1927, Serial No. 171,126. Divided and application May 31,1930,

Serial No. 458,789.

Divided and this application May 31, 1933, Serial No. 673,777

7 Claims.

This invention relates to photo-printing machines and more particularlyto commercial machines in which are combined power and hand actuateddevices for accurately adjusting a neg- 6 ative carrying frame and asensitized blank supporting bed relatively one to the other while bothare in parallel planes.

This application is divided from a co-pending application onPhotographic machines filed 10 May 31, 1930, Ser. No. 458,789, which wasdivided from a prior co-pending application on Photocomposing machinesfiled Feb. 26, 1927, Ser. No. 171,126 upon which application Patent No.1,920,399 has been granted.

The word negative as used herein, refers to any substance through whichlight can pass, as celluloid, and similar compounds, glass, paper andfabrics treated to become translucent, and bearing figuralrepresentations of objects,

scribed, drawn or photographically deposited, or having the objectsattached in such manner as to permit of photo-printing reproduction;similarly, the blank to receive the pictorial illustration of the objectshown on the negative, may be of any substance having a sensitizedsurface.

In machines for making photographic prints for commercial work it isessential that any laxity or slackness be avoided as utmost accuracy isrequired.

It is also obviously important that all movements of the holders ofthese two elements be accomplished expeditiously, conveniently and Ywithout difficulty by an operator.

The purpose of this invention is to produce a machine having a baseprovided with two spaced vertical columns, cross connected near theirtops and adapted to support a negative frame, movable in a horizontalpath back and forth reland horizontally each movement being exclusive ofthe other.

These and other highly essential objects are attained by the unusualconstruction and arrangement of elements hereinafter described andillustrated in the annexed drawing, constituting a material component ofthis disclosure, and in which:

Figure 1 is a rear elevational view of a machine made in conformity withthe invention.

Figure 2 is a vertical sectional view taken on 6 line 2-2 of Figure 1.

As shown in the drawing, the numeral 350 designates a base from whichrise a pair of columns 351 having fixed near their upper ends, rearreaching rails 352 on which are longitudi- 65 nally slidable connectingbars 353 having downwardly reaching brackets 354 carrying a lamp housing355 and a negative frame 356.

The front faces of the columns 351 are provided with undercut guide-ways357 on which ride vertical slides 358 having fixed at their lower ends abeam 359 extending beyond the uprights at both ends.

One of the slides has a threaded nut-like bracket 360 engaging avertical lead screw 361, journalled in bearings 362 on the outer side ofthe adjacent column.

A hand wheel 363 at its upper end provides for manual adjustment and afriction clutch 364 at its lower end connects with a motor 365 carriedon a support 366 formed on the base 350.

Formed on the upper surface of the beam is an undercut longitudinalguide 367 on which rides a carriage 368 having upstanding lugs 369carrying pins 370 connected by leaves 371 to the outer face of arectangular plate bed 372 to carry the sensitized positive plate.

The carriage 368 is threaded to engage a lead screw 3'73 journalled inbearings 374 at the outer ends of the beam 359, the screw having a hand96 wheel 375 at one end and a friction clutch 376 at the other toconnect with an electric motor 377 carried on a support 378 formed onthe adjacent end of the beam.

Thus by revolving the lead screw 361, the plate bed 372 may be moved ina vertical plane and by operating the screw 373, the bed 372 can beactuated in a horizontal plane relative to the negative, each movementbeing accomplished by independent means.

The negative frame 356 is attached to the lamp housing 355 and slidablewith it forward and rearwardly, relative to the front of the machine andhence the plate carried by the bed 372, in a straight path.

Means, not shown, are provided for adjusting the registration of theframes, both vertically and horizontally, and to firmly clamp the framesin adjustment.

A sensitized plate is secured on the press bed which is then swungupwardly and held in a vertical position, parallel with the negativeframe, and the bed and frame mutually adjusted.

Separate controls for each are provided, all being convenientlyaccessible to an operator, making final or complete adjustments by thehand wheels.

It will be understood that the relative positions of the negative andblank positive may be reversed if desired.

As changes of construction could be made within the scope of theinvention, it is intended that all matter contained in the foregoingdescription or shown in the accompanying drawing shall not beinterpreted as illustrative and not in a limiting sense.

Having thus described the invention, what is claimed as new and desiredto secure by Letters Patent, is:

1. In a photo-printing machine comprising in combination with anon-transitory negative holder and a universal adjustable sensitizedplate bed, of independent means for moving said bed in two directions atright angles one to the other,

said holder.

3. In a photo-printing machine, a base, two spaced columns thereonhaving guide ways on their front faces, a bar connecting said columns, anegative frame carried by said bar, a horizontal beam movable intodifferent heights along the faces of said columns, a plate bed mountedto swing on said beam, and means to move said bed along said beam.

4. In a photo-printing machine, a supporting structure, a negative framecarried centrally of said structure, a lamp housing ad justabiysupported by said structure, movable toward and from the front of saidstructures, a slide on said structure, means to move said slidevertically, a hinged plate bed carried by said slide and means to movesaid bed longitudinally.

5, In a photo-printing machine having a rigid upright frame, a negativeholder slidably secured substantially central thereto, a sensitizedplate bed hingedly supported at its lower edge, means for raising andlowering said bed, other means for moving said bed horizontally, a lampsupported in relation to the negative holder, and means whereby saidlamp may be moved away from the negative and returned in operativerelation thereto.

6. In a photo-printing machine, a base, two spaced columns thereonhaving guide-ways on their front faces, a bar connecting said columns, anegative frame carried by said bar, slides movable on said guide-ways, anut bracket fixed on one of said slides, a vertical screw engaging saidbracket, a horizontal beam fixed to said slides to extend outwardly atboth ends, a carriage slidable on said beam, means to actuate saidcarriage, and a plate bed hingedly attached to said carriage.

7. In a photo-printing machine, a base, two spaced columns thereonhaving guide-ways on their front faces, a bar connecting said columns, anegative frame carried by said bar, rails extending rearwardly fromcontiguous sides of said columns, connections between said rails, a lamphouse having supports slidable on said rails, slides movable on saidguide-ways, a nut bracket fixed on one of said slides, a vertical screwengaging said bracket, a horizontal beam fixed to said slides to extendoutwardly at both ends, a carriage slidable on said beam, means toactuate said carriage, and a plate bed hingedly attached to saidcarriage.

HARRY C. JONES.

